Water-gage valve.



R. M. VlANDS.

WATER GAGE VALVE.

APPLICATION msu :uw 19.1915.

l ,284,496 Patented Nov. 12,1918.

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ROBERT M. VIANDSyCF HAGERSTOWN, MIJ-12Rfiatlllifll).4

WATER-GAGE VALVE.

vSpeciication of .Letters Patent.

Patented Nov. .12, 1918.

Application filed July 19, r1915. Serial No. 40,743.

To all whom t may concern:

Beit known that I, ROBERT M. VIANDs, a citizen of the United States,residing at Hagerstown, in the county of vWashington and State ofMaryland, have invented certain new and useful Improvements inWater-Gage Valves, of which the following is a specification.

This invention relates `to an improved valve which is intendedto be usedin connection with a watergage and the principal object of the inventionis to so construct the valve that a check valve forming vpart thereofmay be normally held out'of an operative position when the mainvalve isin place but permit it to move to an operative position when the mainvalve is removed for cleaning and repair purposes.

Another object of the invention is to so construct the stem of the mainvalvethat it will serve to hold the check valve in an open position whenthe main valve is in place.

Another object ofthe inventionisto se construct this valvethatgthevarious parts can be easily taken to'pieces thusrpermitting the valvetobeeasily cleaned.

This invention is illustrated inthe accompanying drawings, whereinFigure 1 is a view in elevation of the improved valve.

Fig. 2 is a longitudinal sectional view through the improved valve.

Fig. 3 is a view in elevation looking at one end of the body portion ofthe valve.

The body portion 10 is provided withv a neck l1 which is externallythreaded so that it may be removably mounted in the nipple l2. Thisnipple 12 is also provided with an externally threaded neck 13 which tsinto the auxiliary valve housing 14 which auxiliary valve housingterminates at end in a threaded stem 15. From an inspection of Fig. 2 itwill readily be seen that when the threaded stem l5 of the auxiliaryvalve housing 14 is connected with the boiler 16 the body portion 10 ofthe valve can be removed from the nipple 12 without it being necessaryto remove the nipple or auxiliary valve housing. It will also be notedfrom an inspection of Fig. 2 that a clear passage is formed from theboiler through the auxiliary valve housing and nipple and into thechamber 17 of the body portion and that therefore water from the boilercan pass into the chamber 17 and up into the gage glass through the pipeor union 18 which lits into the threaded opening 19 vcommunicating withthe interior ofthe chamber. The gage has not'been' shown since it is notan essential element of the invention and any type of 'water glass orgage canlbe used. In order to prevent leakage ofy water or steam fromthe boiler, it beingobvious that this can be `used inv connection withasteam gage as well stitutes a safety valve .to prevent the leakageofwater or steam when the body portionv is removed. The main valve`stem22 passes longitudinally through the body portion and is providedwith a conical vend 23 which engages the valve seat24 when the stem 22is in a' set position thus preventing the passage of steam or water intothe chamber 17. A. pin 25 extends from the head 23 of the valve stem'22and engages the ball 20 thus holding the ball out of engagement withlthefseatl 2lv and preventing the ball from interfering with the passage`of steam or water' through the neck 13 of nipple 12. The outer endportion of the valve stem 22 is threaded as shown at 2G and terminatesin a squared extension 27 upon which is mounted the hand wheel 28.- Thethreaded portion 26 passes through the packing gland 29 and 'isinengagement with the threads thereof as shown in Fig. 2 so that thisgland serves as means for adjustably mounting the valve stem as well asserving for compressing the packing which is placed in the chamber 30formed in the outer end portion of the body portion 10.

W'hen in use the auxiliary valve housing is screwed into the threadedopening of the boiler 16 and the union 18 of the steam or water gage isscrewed into the threaded opening 19 of the body portion. When the stem22 is in the position shown in Fig. 2 the flow of steam or water intothe chamber 17 will be prevented but when the hand Wheel 28 is turned towithdraw the head 23 out of engagement with the seat 24 the steam orwater can How into the chamber 17 and into the gage. It should be notedhowever that When the main valve 23 is opened it does not move asufficient distance to permit the valve 20 to move into engagement withthe seat 21 and therefore the ball valve 2O will not interfere with theilow of Water or steam through the nipple 12. hen it is desired to grindthe valve head 23 or to clean the body portion the body portion will beremoved by placing Wrenches upon the gripping faces ot the body portionand nipple as shown in Fig. 1 and the body portion then turned out ofengagement with the nipple. T he pressure of the steam or Water willthen torce the ball valve into engagement with the seat 2l and willprevent the steam or Water :trom escaping from the boiler. T he valvestern can then be removed and the necessary repairs made, the stemreplaced and the body portion then again connected with the nipple.

Therefore the device Which I have provided for connecting the gage Withthe boiler is provided with two valve or control elements one being amain valve and the other an emergency or safety valve. it should also benoted that this connection is so formed that its various parts can beeasily removed for cleaning or repairing and that therefore this valveWill he very convenient to handle. It should also be noted that withthis device a great deal of time can be saved since When it is desiredto grind the valve head it is not necessary to put out the tire of aboiler or Withdraw the steam and hot Water but that the body portion l()can .be removed Whenever desired Without danger ot the hot Water orsteam escaping and scalding the operator.

What is claimed iszr-'i device as described comprising a hollow bodyportion provided With a side opening forming an outlet an innerpartition Wall dividing said body portion into two equal compartmentsand positioned upon one side of said outlet, a Ygland threaded into theopen end of one of the compartments to torni a packing chamber, areduced neck extending from the opposite end ot the body portion andprovided with a longitudinal bore having its inner end opening into theremaining compartment and enlarged to form a valve seat, a valve stemextending through said gland and partition Wall and supported forsliding movement in said Wall, valve head formed on the inner end ofsaid stem and engageable With said seat a nipple threaded upon said neckand recessed at its outer end to provide a second valve seat, anauxiliary valve housing supported upon said nipple and enlargedinteriorly to provide a truste conical chamber surrounding said seat, aball valve loose in said chamber tor engagement vwith said seat, and astem carried by said valve head and extending through the reduced neckof the body and the nipple for engagement with said ball valve.

ln testimony whereof l aliii; my signature in presence of two Witnesses.

ROBERT M. VANDS. lVitnesses:

M. JENKrNs, Gao. A. Davis.

Copies o thin patent may be obtained for live cents each. by addressingthe Commissioner of Patents, Washington, E. 43.

